Abstract
Although host specificity has been observed in different species of Brucella, crossing the animal host boundary is likely to occur at any time. In this study, Bruce ladder PCR and abortus-melitensis-ovis-suis (AMOS) PCR assays were used to characterize 47 Brucella isolates from Indian origin in order to know exact species for understanding epidemiology of brucellosis. Out of them, 28, 14, and 5 isolates were found to be Brucella abortus, Brucella melitensis, and Brucella suis, respectively. Further analysis by AMOS PCR has identified that all the B. abortus isolates belong to any one of the biovar 1, 2, or 4; of the five B. suis isolates, three belong to biovar 1 and two belong to any one of the biovar 2, 3, 4, or 5. Although this multiplex Bruce ladder PCR is useful in differentiating all Brucella species, elaborate study is required to further characterize the isolates at exact biovar level.
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